"aptitude changelog pygtk" shows no changes recently, so it's probably not in there. These were the packages I got in my two most recent updates (from /var/log/dpkg.log):
2009-03-27 09:06:39 upgrade python-dev 2.6.1-0ubuntu4 2.6.1-0ubuntu6 2009-03-27 09:06:39 upgrade python 2.6.1-0ubuntu4 2.6.1-0ubuntu6 2009-03-27 09:06:40 upgrade python-minimal 2.6.1-0ubuntu4 2.6.1-0ubuntu6 2009-03-27 09:06:43 upgrade libxtst-dev 2:1.0.3-1ubuntu1 2:1.0.3-1ubuntu2 2009-03-27 09:06:43 upgrade libxtst6 2:1.0.3-1ubuntu1 2:1.0.3-1ubuntu2 2009-03-27 09:06:43 upgrade command-not-found-data 0.2.33ubuntu3 0.2.34ubuntu1 2009-03-27 09:06:43 upgrade command-not-found 0.2.33ubuntu3 0.2.34ubuntu1 2009-03-27 09:06:44 upgrade language-selector 0.4.2 0.4.2.1 2009-03-27 09:06:44 upgrade language-selector-common 0.4.2 0.4.2.1 2009-03-27 10:51:53 upgrade python2.6-dev 2.6.1-1ubuntu4 2.6.1-1ubuntu5 2009-03-27 10:51:53 upgrade libpython2.6 2.6.1-1ubuntu4 2.6.1-1ubuntu5 2009-03-27 10:51:53 upgrade python2.6 2.6.1-1ubuntu4 2.6.1-1ubuntu5 2009-03-27 10:51:54 upgrade python2.6-minimal 2.6.1-1ubuntu4 2.6.1-1ubuntu5 2009-03-27 10:51:58 upgrade locales 2.9+cvs20090214-6 2.9+cvs20090214-7 2009-03-27 10:52:00 upgrade python-central 0.6.11ubuntu4 0.6.11ubuntu5 2009-03-27 10:52:00 upgrade bluetooth 4.32-0ubuntu2 4.32-0ubuntu3 2009-03-27 10:52:01 upgrade bluez-utils 4.32-0ubuntu2 4.32-0ubuntu3 2009-03-27 10:52:01 upgrade example-content 35 36 2009-03-27 10:52:01 upgrade firefox 3.0.7+nobinonly-0ubuntu1 3.0.7+nobinonly-0ubuntu2 2009-03-27 10:52:01 upgrade firefox-gnome-support 3.0.7+nobinonly-0ubuntu1 3.0.7+nobinonly-0ubuntu2 2009-03-27 10:52:02 upgrade gnome-app-install 0.5.22-0ubuntu1 0.5.23-0ubuntu1 2009-03-27 10:52:07 upgrade hal-info 20090227-0ubuntu1 20090324-0ubuntu1 2009-03-27 10:52:07 upgrade libkpathsea4 2007.dfsg.2-4 2007.dfsg.2-4ubuntu1 2009-03-27 10:52:07 upgrade nautilus-share 0.7.2-0ubuntu7 0.7.2-0ubuntu8 2009-03-27 10:52:07 upgrade texlive-base-bin 2007.dfsg.2-4 2007.dfsg.2-4ubuntu1 2009-03-27 10:52:09 upgrade texlive-base-bin-doc 2007.dfsg.2-4 2007.dfsg.2-4ubuntu1 2009-03-27 10:52:09 upgrade texlive-extra-utils 2007.dfsg.2-4 2007.dfsg.2-4ubuntu1 2009-03-27 10:52:10 upgrade xserver-common 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5 2009-03-27 10:52:10 upgrade xserver-xorg-core-dbg 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5 2009-03-27 10:52:10 upgrade xserver-xorg-core 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5 2009-03-27 10:52:11 upgrade xserver-xorg-dev 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5 2009-03-27 10:52:11 upgrade gnome-system-tools 2.22.2-0ubuntu1 2.22.2-0ubuntu2 2009-03-27 10:52:14 upgrade python2.6-dbg 2.6.1-1ubuntu4 2.6.1-1ubuntu5
"aptitude changelog pygtk" shows no changes recently, so it's probably not in there.
These were the packages I got in my two most recent updates (from /var/log/dpkg.log):
2009-03-27 09:06:39 upgrade python-dev 2.6.1-0ubuntu4 2.6.1-0ubuntu6 not-found- data 0.2.33ubuntu3 0.2.34ubuntu1 selector- common 0.4.2 0.4.2.1 -0ubuntu1 3.0.7+nobinonly -0ubuntu2 gnome-support 3.0.7+nobinonly -0ubuntu1 3.0.7+nobinonly -0ubuntu2 2-4ubuntu1 2-4ubuntu1 base-bin- doc 2007.dfsg.2-4 2007.dfsg. 2-4ubuntu1 2-4ubuntu1 xorg-core- dbg 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5
2009-03-27 09:06:39 upgrade python 2.6.1-0ubuntu4 2.6.1-0ubuntu6
2009-03-27 09:06:40 upgrade python-minimal 2.6.1-0ubuntu4 2.6.1-0ubuntu6
2009-03-27 09:06:43 upgrade libxtst-dev 2:1.0.3-1ubuntu1 2:1.0.3-1ubuntu2
2009-03-27 09:06:43 upgrade libxtst6 2:1.0.3-1ubuntu1 2:1.0.3-1ubuntu2
2009-03-27 09:06:43 upgrade command-
2009-03-27 09:06:43 upgrade command-not-found 0.2.33ubuntu3 0.2.34ubuntu1
2009-03-27 09:06:44 upgrade language-selector 0.4.2 0.4.2.1
2009-03-27 09:06:44 upgrade language-
2009-03-27 10:51:53 upgrade python2.6-dev 2.6.1-1ubuntu4 2.6.1-1ubuntu5
2009-03-27 10:51:53 upgrade libpython2.6 2.6.1-1ubuntu4 2.6.1-1ubuntu5
2009-03-27 10:51:53 upgrade python2.6 2.6.1-1ubuntu4 2.6.1-1ubuntu5
2009-03-27 10:51:54 upgrade python2.6-minimal 2.6.1-1ubuntu4 2.6.1-1ubuntu5
2009-03-27 10:51:58 upgrade locales 2.9+cvs20090214-6 2.9+cvs20090214-7
2009-03-27 10:52:00 upgrade python-central 0.6.11ubuntu4 0.6.11ubuntu5
2009-03-27 10:52:00 upgrade bluetooth 4.32-0ubuntu2 4.32-0ubuntu3
2009-03-27 10:52:01 upgrade bluez-utils 4.32-0ubuntu2 4.32-0ubuntu3
2009-03-27 10:52:01 upgrade example-content 35 36
2009-03-27 10:52:01 upgrade firefox 3.0.7+nobinonly
2009-03-27 10:52:01 upgrade firefox-
2009-03-27 10:52:02 upgrade gnome-app-install 0.5.22-0ubuntu1 0.5.23-0ubuntu1
2009-03-27 10:52:07 upgrade hal-info 20090227-0ubuntu1 20090324-0ubuntu1
2009-03-27 10:52:07 upgrade libkpathsea4 2007.dfsg.2-4 2007.dfsg.
2009-03-27 10:52:07 upgrade nautilus-share 0.7.2-0ubuntu7 0.7.2-0ubuntu8
2009-03-27 10:52:07 upgrade texlive-base-bin 2007.dfsg.2-4 2007.dfsg.
2009-03-27 10:52:09 upgrade texlive-
2009-03-27 10:52:09 upgrade texlive-extra-utils 2007.dfsg.2-4 2007.dfsg.
2009-03-27 10:52:10 upgrade xserver-common 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5
2009-03-27 10:52:10 upgrade xserver-
2009-03-27 10:52:10 upgrade xserver-xorg-core 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5
2009-03-27 10:52:11 upgrade xserver-xorg-dev 2:1.6.0-0ubuntu4 2:1.6.0-0ubuntu5
2009-03-27 10:52:11 upgrade gnome-system-tools 2.22.2-0ubuntu1 2.22.2-0ubuntu2
2009-03-27 10:52:14 upgrade python2.6-dbg 2.6.1-1ubuntu4 2.6.1-1ubuntu5